/Engine/Source/Runtime/Engine/Classes/Animation/AnimData/IAnimationDataController.h
void ResizeNumberOfFrames ( [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) NewLengthInFrames, [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) T0, [FFrameNumber](API\Runtime\Core\Misc\FFrameNumber) T1, bool bShouldTransact )